…fault
This is both the only reasonable default for us and should match php.ini settings
used in the phpfarm cookbook. Otherwise Symfony2 test suite will not pass.
With this in place, the PHP support jigsaw is falling into place.

Per discussion with Pascal. This makes Symfony2 test suite pass if we also change
OS TZ to be UTC (this will be done shortly). Pascal says PHP manual strongly recommends
using nothing but UTC for the TZ setting.